1/*-
2 * SPDX-License-Identifier: BSD-3-Clause
3 *
4 * Copyright (c) 1980, 1986, 1993
5 *	The Regents of the University of California.  All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of the University nor the names of its contributors
16 *    may be used to endorse or promote products derived from this software
17 *    without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 */
31
32#include <sys/param.h>
33#include <sys/stat.h>
34
35#include <ufs/ufs/dinode.h>
36#include <ufs/ffs/fs.h>
37
38#include <err.h>
39#include <stdint.h>
40#include <string.h>
41
42#include "fsck.h"
43
44void
45pass4(void)
46{
47	ino_t inumber;
48	struct inode ip;
49	struct inodesc idesc;
50	int i, n, cg;
51
52	memset(&idesc, 0, sizeof(struct inodesc));
53	idesc.id_func = freeblock;
54	for (cg = 0; cg < sblock.fs_ncg; cg++) {
55		if (got_siginfo) {
56			printf("%s: phase 4: cyl group %d of %d (%d%%)\n",
57			    cdevname, cg, sblock.fs_ncg,
58			    cg * 100 / sblock.fs_ncg);
59			got_siginfo = 0;
60		}
61		if (got_sigalarm) {
62			setproctitle("%s p4 %d%%", cdevname,
63			    cg * 100 / sblock.fs_ncg);
64			got_sigalarm = 0;
65		}
66		inumber = cg * sblock.fs_ipg;
67		for (i = 0; i < inostathead[cg].il_numalloced; i++, inumber++) {
68			if (inumber < UFS_ROOTINO)
69				continue;
70			idesc.id_number = inumber;
71			idesc.id_type = inoinfo(inumber)->ino_idtype;
72			switch (inoinfo(inumber)->ino_state) {
73
74			case FZLINK:
75			case DZLINK:
76				if (inoinfo(inumber)->ino_linkcnt == 0) {
77					clri(&idesc, "UNREF", 1);
78					break;
79				}
80				/* fall through */
81
82			case FSTATE:
83			case DFOUND:
84				n = inoinfo(inumber)->ino_linkcnt;
85				if (n) {
86					adjust(&idesc, (short)n);
87					break;
88				}
89				break;
90
91			case DSTATE:
92				clri(&idesc, "UNREF", 1);
93				break;
94
95			case DCLEAR:
96				/* if on snapshot, already cleared */
97				if (cursnapshot != 0)
98					break;
99				ginode(inumber, &ip);
100				if (DIP(ip.i_dp, di_size) == 0) {
101					clri(&idesc, "ZERO LENGTH", 1);
102					irelse(&ip);
103					break;
104				}
105				irelse(&ip);
106				/* fall through */
107			case FCLEAR:
108				clri(&idesc, "BAD/DUP", 1);
109				break;
110
111			case USTATE:
112				break;
113
114			default:
115				errx(EEXIT, "BAD STATE %d FOR INODE I=%ju",
116				    inoinfo(inumber)->ino_state,
117				    (uintmax_t)inumber);
118			}
119		}
120	}
121}
122